| Name | Description | |
|---|---|---|
 | actionPending | Specifies whether an action is in progress (to prevent recursion). |
| chart | Fpchart control which can be used to fire events when executing actions. |
| maxLength | Specifies the maximum number of UndoAction objects to keep on the undo or redo stacks. |
| redoList | Specifies the redo stack (last element is on top). |
| undoList | Specifies the undo stack (last element is on top). |